postgresql/src/include/executor/nodeGroup.h

/*-------------------------------------------------------------------------
 *
 * nodeGroup.h
 *	  prototypes for nodeGroup.c
 *
 *
 * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: nodeGroup.h,v 1.20 2001/10/28 06:26:06 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef NODEGROUP_H
#define NODEGROUP_H

#include "nodes/plannodes.h"

extern TupleTableSlot *ExecGroup(Group *node);
extern bool ExecInitGroup(Group *node, EState *estate, Plan *parent);
extern int	ExecCountSlotsGroup(Group *node);
extern void ExecEndGroup(Group *node);
extern void ExecReScanGroup(Group *node, ExprContext *exprCtxt, Plan *parent);

extern bool execTuplesMatch(HeapTuple tuple1,
				HeapTuple tuple2,
				TupleDesc tupdesc,
				int numCols,
				AttrNumber *matchColIdx,
				FmgrInfo *eqfunctions,
				MemoryContext evalContext);
extern FmgrInfo *execTuplesMatchPrepare(TupleDesc tupdesc,
					   int numCols,
					   AttrNumber *matchColIdx);

#endif	 /* NODEGROUP_H */
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`/*-------------------------------------------------------------------------`
			`*`
Change my-function-name-- to my_function_name, and optimizer renames. 1999-02-13 18:22:53 -05:00			`* nodeGroup.h`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 01:04:48 -04:00			`* prototypes for nodeGroup.c`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
			`*`
Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group. 2001-01-24 14:43:33 -05:00			`* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group`
Add: * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files. 2000-01-26 00:58:53 -05:00			`* Portions Copyright (c) 1994, Regents of the University of California`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments. 2001-10-28 01:26:15 -05:00			`* $Id: nodeGroup.h,v 1.20 2001/10/28 06:26:06 momjian Exp $`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00			`*`
			`*-------------------------------------------------------------------------`
			`*/`
Massive commit to run PGINDENT on all .c and .h files. 1997-09-07 01:04:48 -04:00			`#ifndef NODEGROUP_H`
			`#define NODEGROUP_H`
Postgres95 1.01 Distribution - Virgin Sources 1996-07-09 02:22:35 -04:00
Cleanup up include files. 1997-11-25 20:14:33 -05:00			`#include "nodes/plannodes.h"`

Used modified version of indent that understands over 100 typedefs. 1997-09-08 17:56:23 -04:00			`extern TupleTableSlot ExecGroup(Group node);`
			`extern bool ExecInitGroup(Group node, EState estate, Plan *parent);`
			`extern int ExecCountSlotsGroup(Group *node);`
			`extern void ExecEndGroup(Group *node);`
Patch for ReScan of Group. 1998-07-15 21:49:19 -04:00			`extern void ExecReScanGroup(Group node, ExprContext exprCtxt, Plan *parent);`
pgindent run over code. 1999-05-25 12:15:34 -04:00
Redesign DISTINCT ON as discussed in pgsql-sql 1/25/00: syntax is now SELECT DISTINCT ON (expr [, expr ...]) targetlist ... and there is a check to make sure that the user didn't specify an ORDER BY that's incompatible with the DISTINCT operation. Reimplement nodeUnique and nodeGroup to use the proper datatype-specific equality function for each column being compared --- they used to do bitwise comparisons or convert the data to text strings and strcmp(). (To add insult to injury, they'd look up the conversion functions once for each tuple...) Parse/plan representation of DISTINCT is now a list of SortClause nodes. initdb forced by querytree change... 2000-01-27 13:11:50 -05:00			`extern bool execTuplesMatch(HeapTuple tuple1,`
Ye-old pgindent run. Same 4-space tabs. 2000-04-12 13:17:23 -04:00			`HeapTuple tuple2,`
			`TupleDesc tupdesc,`
			`int numCols,`
			`AttrNumber *matchColIdx,`
First stage of reclaiming memory in executor by resetting short-term memory contexts. Currently, only leaks in expressions executed as quals or projections are handled. Clean up some old dead cruft in executor while at it --- unused fields in state nodes, that sort of thing. 2000-07-11 22:37:39 -04:00			`FmgrInfo *eqfunctions,`
			`MemoryContext evalContext);`
Redesign DISTINCT ON as discussed in pgsql-sql 1/25/00: syntax is now SELECT DISTINCT ON (expr [, expr ...]) targetlist ... and there is a check to make sure that the user didn't specify an ORDER BY that's incompatible with the DISTINCT operation. Reimplement nodeUnique and nodeGroup to use the proper datatype-specific equality function for each column being compared --- they used to do bitwise comparisons or convert the data to text strings and strcmp(). (To add insult to injury, they'd look up the conversion functions once for each tuple...) Parse/plan representation of DISTINCT is now a list of SortClause nodes. initdb forced by querytree change... 2000-01-27 13:11:50 -05:00			`extern FmgrInfo *execTuplesMatchPrepare(TupleDesc tupdesc,`
Ye-old pgindent run. Same 4-space tabs. 2000-04-12 13:17:23 -04:00			`int numCols,`
			`AttrNumber *matchColIdx);`
Another pgindent run. Fixes enum indenting, and improves #endif spacing. Also adds space for one-line comments. 2001-10-28 01:26:15 -05:00
OK, folks, here is the pgindent output. 1998-09-01 00:40:42 -04:00			`#endif /* NODEGROUP_H */`